/**
* Execute cron tasks
*/
function cron_run()
{
global $DB, $CFG, $OUTPUT;
if (CLI_MAINTENANCE) {
echo "CLI maintenance mode active, cron execution suspended.\n";
exit(1);
}
if (moodle_needs_upgrading()) {
echo "Moodle upgrade pending, cron execution suspended.\n";
exit(1);
}
require_once $CFG->libdir . '/adminlib.php';
require_once $CFG->libdir . '/gradelib.php';
if (!empty($CFG->showcronsql)) {
$DB->set_debug(true);
}
if (!empty($CFG->showcrondebugging)) {
$CFG->debug = DEBUG_DEVELOPER;
$CFG->debugdisplay = true;
}
set_time_limit(0);
$starttime = microtime();
// Increase memory limit
raise_memory_limit(MEMORY_EXTRA);
// Emulate normal session - we use admin accoutn by default
cron_setup_user();
// Start output log
$timenow = time();
mtrace("Server Time: " . date('r', $timenow) . "\n\n");
// Run cleanup core cron jobs, but not every time since they aren't too important.
// These don't have a timer to reduce load, so we'll use a random number
// to randomly choose the percentage of times we should run these jobs.
srand((double) microtime() * 10000000);
$random100 = rand(0, 100);
if ($random100 < 20) {
// Approximately 20% of the time.
mtrace("Running clean-up tasks...");
// Delete users who haven't confirmed within required period
if (!empty($CFG->deleteunconfirmed)) {
$cuttime = $timenow - $CFG->deleteunconfirmed * 3600;
$rs = $DB->get_recordset_sql("SELECT *\n FROM {user}\n WHERE confirmed = 0 AND firstaccess > 0\n AND firstaccess < ?", array($cuttime));
foreach ($rs as $user) {
delete_user($user);
// we MUST delete user properly first
$DB->delete_records('user', array('id' => $user->id));
// this is a bloody hack, but it might work
mtrace(" Deleted unconfirmed user for " . fullname($user, true) . " ({$user->id})");
}
$rs->close();
}
// Delete users who haven't completed profile within required period
if (!empty($CFG->deleteincompleteusers)) {
$cuttime = $timenow - $CFG->deleteincompleteusers * 3600;
$rs = $DB->get_recordset_sql("SELECT *\n FROM {user}\n WHERE confirmed = 1 AND lastaccess > 0\n AND lastaccess < ? AND deleted = 0\n AND (lastname = '' OR firstname = '' OR email = '')", array($cuttime));
foreach ($rs as $user) {
delete_user($user);
mtrace(" Deleted not fully setup user {$user->username} ({$user->id})");
}
$rs->close();
}
// Delete old logs to save space (this might need a timer to slow it down...)
if (!empty($CFG->loglifetime)) {
// value in days
$loglifetime = $timenow - $CFG->loglifetime * 3600 * 24;
$DB->delete_records_select("log", "time < ?", array($loglifetime));
mtrace(" Deleted old log records");
}
// Delete old backup_controllers and logs.
$loglifetime = get_config('backup', 'loglifetime');
if (!empty($loglifetime)) {
// Value in days.
$loglifetime = $timenow - $loglifetime * 3600 * 24;
// Delete child records from backup_logs.
$DB->execute("DELETE FROM {backup_logs}\n WHERE EXISTS (\n SELECT 'x'\n FROM {backup_controllers} bc\n WHERE bc.backupid = {backup_logs}.backupid\n AND bc.timecreated < ?)", array($loglifetime));
// Delete records from backup_controllers.
$DB->execute("DELETE FROM {backup_controllers}\n WHERE timecreated < ?", array($loglifetime));
mtrace(" Deleted old backup records");
}
// Delete old cached texts
if (!empty($CFG->cachetext)) {
// Defined in config.php
$cachelifetime = time() - $CFG->cachetext - 60;
// Add an extra minute to allow for really heavy sites
$DB->delete_records_select('cache_text', "timemodified < ?", array($cachelifetime));
mtrace(" Deleted old cache_text records");
}
if (!empty($CFG->usetags)) {
require_once $CFG->dirroot . '/tag/lib.php';
tag_cron();
mtrace(' Executed tag cron');
}
// Context maintenance stuff
context_helper::cleanup_instances();
mtrace(' Cleaned up context instances');
context_helper::build_all_paths(false);
// If you suspect that the context paths are somehow corrupt
// replace the line below with: context_helper::build_all_paths(true);
mtrace(' Built context paths');
// Remove expired cache flags
gc_cache_flags();
mtrace(' Cleaned cache flags');
// Cleanup messaging
if (!empty($CFG->messagingdeletereadnotificationsdelay)) {
$notificationdeletetime = time() - $CFG->messagingdeletereadnotificationsdelay;
$DB->delete_records_select('message_read', 'notification=1 AND timeread<:notificationdeletetime', array('notificationdeletetime' => $notificationdeletetime));
mtrace(' Cleaned up read notifications');
}
mtrace("...finished clean-up tasks");
}
// End of occasional clean-up tasks
// Send login failures notification - brute force protection in moodle is weak,
// we should at least send notices early in each cron execution
if (notify_login_failures()) {
mtrace(' Notified login failures');
}
// Make sure all context instances are properly created - they may be required in auth, enrol, etc.
context_helper::create_instances();
mtrace(' Created missing context instances');
// Session gc
session_gc();
mtrace("Cleaned up stale user sessions");
// Run the auth cron, if any before enrolments
// because it might add users that will be needed in enrol plugins
$auths = get_enabled_auth_plugins();
mtrace("Running auth crons if required...");
foreach ($auths as $auth) {
$authplugin = get_auth_plugin($auth);
if (method_exists($authplugin, 'cron')) {
mtrace("Running cron for auth/{$auth}...");
$authplugin->cron();
if (!empty($authplugin->log)) {
mtrace($authplugin->log);
}
}
unset($authplugin);
}
// Generate new password emails for users - ppl expect these generated asap
if ($DB->count_records('user_preferences', array('name' => 'create_password', 'value' => '1'))) {
mtrace('Creating passwords for new users...');
$newusers = $DB->get_recordset_sql("SELECT u.id as id, u.email, u.firstname,\n u.lastname, u.username, u.lang,\n p.id as prefid\n FROM {user} u\n JOIN {user_preferences} p ON u.id=p.userid\n WHERE p.name='create_password' AND p.value='1' AND u.email !='' AND u.suspended = 0 AND u.auth != 'nologin' AND u.deleted = 0");
// note: we can not send emails to suspended accounts
foreach ($newusers as $newuser) {
if (setnew_password_and_mail($newuser)) {
unset_user_preference('create_password', $newuser);
set_user_preference('auth_forcepasswordchange', 1, $newuser);
} else {
trigger_error("Could not create and mail new user password!");
}
}
$newusers->close();
}
// It is very important to run enrol early
// because other plugins depend on correct enrolment info.
mtrace("Running enrol crons if required...");
$enrols = enrol_get_plugins(true);
foreach ($enrols as $ename => $enrol) {
// do this for all plugins, disabled plugins might want to cleanup stuff such as roles
if (!$enrol->is_cron_required()) {
continue;
}
mtrace("Running cron for enrol_{$ename}...");
$enrol->cron();
$enrol->set_config('lastcron', time());
}
// Run all cron jobs for each module
mtrace("Starting activity modules");
get_mailer('buffer');
if ($mods = $DB->get_records_select("modules", "cron > 0 AND ((? - lastcron) > cron) AND visible = 1", array($timenow))) {
foreach ($mods as $mod) {
$libfile = "{$CFG->dirroot}/mod/{$mod->name}/lib.php";
if (file_exists($libfile)) {
include_once $libfile;
$cron_function = $mod->name . "_cron";
if (function_exists($cron_function)) {
mtrace("Processing module function {$cron_function} ...", '');
$pre_dbqueries = null;
$pre_dbqueries = $DB->perf_get_queries();
$pre_time = microtime(1);
if ($cron_function()) {
$DB->set_field("modules", "lastcron", $timenow, array("id" => $mod->id));
}
if (isset($pre_dbqueries)) {
mtrace("... used " . ($DB->perf_get_queries() - $pre_dbqueries) . " dbqueries");
mtrace("... used " . (microtime(1) - $pre_time) . " seconds");
}
// Reset possible changes by modules to time_limit. MDL-11597
@set_time_limit(0);
mtrace("done.");
}
}
}
}
get_mailer('close');
mtrace("Finished activity modules");
mtrace("Starting blocks");
if ($blocks = $DB->get_records_select("block", "cron > 0 AND ((? - lastcron) > cron) AND visible = 1", array($timenow))) {
// We will need the base class.
require_once $CFG->dirroot . '/blocks/moodleblock.class.php';
foreach ($blocks as $block) {
$blockfile = $CFG->dirroot . '/blocks/' . $block->name . '/block_' . $block->name . '.php';
if (file_exists($blockfile)) {
require_once $blockfile;
$classname = 'block_' . $block->name;
$blockobj = new $classname();
if (method_exists($blockobj, 'cron')) {
mtrace("Processing cron function for " . $block->name . '....', '');
if ($blockobj->cron()) {
$DB->set_field('block', 'lastcron', $timenow, array('id' => $block->id));
}
// Reset possible changes by blocks to time_limit. MDL-11597
@set_time_limit(0);
mtrace('done.');
}
}
}
}
mtrace('Finished blocks');
mtrace('Starting admin reports');
cron_execute_plugin_type('report');
mtrace('Finished admin reports');
mtrace('Starting main gradebook job...');
grade_cron();
mtrace('done.');
mtrace('Starting processing the event queue...');
events_cron();
mtrace('done.');
if ($CFG->enablecompletion) {
// Completion cron
mtrace('Starting the completion cron...');
require_once $CFG->libdir . '/completion/cron.php';
completion_cron();
mtrace('done');
}
if ($CFG->enableportfolios) {
// Portfolio cron
mtrace('Starting the portfolio cron...');
require_once $CFG->libdir . '/portfoliolib.php';
portfolio_cron();
mtrace('done');
}
//now do plagiarism checks
require_once $CFG->libdir . '/plagiarismlib.php';
plagiarism_cron();
mtrace('Starting course reports');
cron_execute_plugin_type('coursereport');
mtrace('Finished course reports');
// run gradebook import/export/report cron
mtrace('Starting gradebook plugins');
cron_execute_plugin_type('gradeimport');
cron_execute_plugin_type('gradeexport');
cron_execute_plugin_type('gradereport');
mtrace('Finished gradebook plugins');
// Run external blog cron if needed
if ($CFG->useexternalblogs) {
require_once $CFG->dirroot . '/blog/lib.php';
mtrace("Fetching external blog entries...", '');
$sql = "timefetched < ? OR timefetched = 0";
$externalblogs = $DB->get_records_select('blog_external', $sql, array(time() - $CFG->externalblogcrontime));
foreach ($externalblogs as $eb) {
blog_sync_external_entries($eb);
}
mtrace('done.');
}
// Run blog associations cleanup
if ($CFG->useblogassociations) {
require_once $CFG->dirroot . '/blog/lib.php';
// delete entries whose contextids no longer exists
mtrace("Deleting blog associations linked to non-existent contexts...", '');
$DB->delete_records_select('blog_association', 'contextid NOT IN (SELECT id FROM {context})');
mtrace('done.');
}
// Run question bank clean-up.
mtrace("Starting the question bank cron...", '');
require_once $CFG->libdir . '/questionlib.php';
question_bank::cron();
mtrace('done.');
//Run registration updated cron
mtrace(get_string('siteupdatesstart', 'hub'));
require_once $CFG->dirroot . '/' . $CFG->admin . '/registration/lib.php';
$registrationmanager = new registration_manager();
$registrationmanager->cron();
mtrace(get_string('siteupdatesend', 'hub'));
// If enabled, fetch information about available updates and eventually notify site admins
if (empty($CFG->disableupdatenotifications)) {
require_once $CFG->libdir . '/pluginlib.php';
$updateschecker = available_update_checker::instance();
$updateschecker->cron();
}
//cleanup old session linked tokens
//deletes the session linked tokens that are over a day old.
mtrace("Deleting session linked tokens more than one day old...", '');
$DB->delete_records_select('external_tokens', 'lastaccess < :onedayago AND tokentype = :tokentype', array('onedayago' => time() - DAYSECS, 'tokentype' => EXTERNAL_TOKEN_EMBEDDED));
mtrace('done.');
// all other plugins
cron_execute_plugin_type('message', 'message plugins');
cron_execute_plugin_type('filter', 'filters');
cron_execute_plugin_type('editor', 'editors');
cron_execute_plugin_type('format', 'course formats');
cron_execute_plugin_type('profilefield', 'profile fields');
cron_execute_plugin_type('webservice', 'webservices');
cron_execute_plugin_type('repository', 'repository plugins');
cron_execute_plugin_type('qbehaviour', 'question behaviours');
cron_execute_plugin_type('qformat', 'question import/export formats');
cron_execute_plugin_type('qtype', 'question types');
cron_execute_plugin_type('plagiarism', 'plagiarism plugins');
cron_execute_plugin_type('theme', 'themes');
cron_execute_plugin_type('tool', 'admin tools');
// and finally run any local cronjobs, if any
if ($locals = get_plugin_list('local')) {
mtrace('Processing customized cron scripts ...', '');
// new cron functions in lib.php first
cron_execute_plugin_type('local');
// legacy cron files are executed directly
foreach ($locals as $local => $localdir) {
if (file_exists("{$localdir}/cron.php")) {
include "{$localdir}/cron.php";
}
}
mtrace('done.');
}
// Run automated backups if required - these may take a long time to execute
require_once $CFG->dirroot . '/backup/util/includes/backup_includes.php';
require_once $CFG->dirroot . '/backup/util/helper/backup_cron_helper.class.php';
backup_cron_automated_helper::run_automated_backup();
// Run stats as at the end because they are known to take very long time on large sites
if (!empty($CFG->enablestats) and empty($CFG->disablestatsprocessing)) {
require_once $CFG->dirroot . '/lib/statslib.php';
// check we're not before our runtime
$timetocheck = stats_get_base_daily() + $CFG->statsruntimestarthour * 60 * 60 + $CFG->statsruntimestartminute * 60;
if (time() > $timetocheck) {
// process configured number of days as max (defaulting to 31)
$maxdays = empty($CFG->statsruntimedays) ? 31 : abs($CFG->statsruntimedays);
if (stats_cron_daily($maxdays)) {
if (stats_cron_weekly()) {
if (stats_cron_monthly()) {
stats_clean_old();
}
}
}
@set_time_limit(0);
} else {
mtrace('Next stats run after:' . userdate($timetocheck));
}
}
// cleanup file trash - not very important
$fs = get_file_storage();
$fs->cron();
mtrace("Cron script completed correctly");
$difftime = microtime_diff($starttime, microtime());
mtrace("Execution took " . $difftime . " seconds");
}
/**
* GC session handler
*
* {@see http://php.net/manual/en/function.session-set-save-handler.php}
*
* @param int $ignored_maxlifetime moodle uses special timeout rules
* @return bool success
*/
public function handler_gc($ignored_maxlifetime)
{
session_gc();
return true;
}
set_config('auth', implode(',', $authsenabled));
}
if ($auth == $CFG->registerauth) {
set_config('registerauth', '');
}
session_gc();
// remove stale sessions
break;
case 'enable':
// add to enabled list
if (!in_array($auth, $authsenabled)) {
$authsenabled[] = $auth;
$authsenabled = array_unique($authsenabled);
set_config('auth', implode(',', $authsenabled));
}
session_gc();
// remove stale sessions
break;
case 'down':
$key = array_search($auth, $authsenabled);
// check auth plugin is valid
if ($key === false) {
print_error('pluginnotenabled', 'auth', $url, $auth);
}
// move down the list
if ($key < count($authsenabled) - 1) {
$fsave = $authsenabled[$key];
$authsenabled[$key] = $authsenabled[$key + 1];
$authsenabled[$key + 1] = $fsave;
set_config('auth', implode(',', $authsenabled));
}
$USER->$variable = $value;
}
// preload custom fields
profile_load_custom_fields($USER);
if (!empty($USER->newadminuser)) {
unset($USER->newadminuser);
// apply defaults again - some of them might depend on admin user info, backup, roles, etc.
admin_apply_default_settings(NULL , false);
// redirect to admin/ to continue with installation
redirect("$CFG->wwwroot/$CFG->admin/");
} else {
redirect("$CFG->wwwroot/user/view.php?id=$USER->id&course=$course->id");
}
} else {
session_gc(); // remove stale sessions
redirect("$CFG->wwwroot/$CFG->admin/user.php");
}
//never reached
}
// make sure we really are on the https page when https login required
$PAGE->verify_https_required();
/// Display page header
if ($user->id == -1 or ($user->id != $USER->id)) {
if ($user->id == -1) {
echo $OUTPUT->header();
} else {
$PAGE->set_heading($SITE->fullname);
